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The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

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Violations

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Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	7114784	Returned to Compliance	02-JUL-2025	-	No
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	7114783	Open	17-OCT-2024	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3620297	Known	01-NOV-1996	30-NOV-1996	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	2735595	Returned to Compliance	01-DEC-1994	01-JAN-1996	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	1260591	Returned to Compliance	21-DEC-1990	20-DEC-1994	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	572988	Returned to Compliance	01-SEP-1988	31-AUG-1992	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	235685	Returned to Compliance	01-FEB-1985	31-JAN-1989	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	235784	Returned to Compliance	14-SEP-1984	13-SEP-1988	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	235581	Known	02-FEB-1981	01-FEB-1985	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7114780	Known	30-JUN-1977	29-JUN-1981	No

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Enforcement Actions

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Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
6143605	7114784	SOX	State Compliance achieved	18-DEC-2025	State	-
6143602	7114783	SIE	State Public Notification requested	02-JUL-2025	State	-
6143597	3620297	SIE	State Public Notification requested	18-JAN-1997	State	-
5555296	2735595	SOX	State Compliance achieved	08-FEB-1996	State	-
5555296	1260591	SOX	State Compliance achieved	08-FEB-1996	State	-
27689	572988	SOX	State Compliance achieved	03-FEB-1989	State	-
27689	235784	SOX	State Compliance achieved	03-FEB-1989	State	-
1001885	235685	SOX	State Compliance achieved	29-JAN-1987	State	-
381	235581	SIF	State Public Notification received	30-SEP-1981	State	-

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All Facilities

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Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CC 01-MASTER METER NORTHBROOK	25980	Yes	Consecutive Connection	Surface water	Permanent	Active
WELL 4 (20647) ABANDONED	20355	Yes	Well	Ground water	Other	Inactive
WELL 2 (20646) ABANDONED	20354	Yes	Well	Ground water	Other	Inactive
WELL 1B (20645) ABANDONED	20353	Yes	Well	Ground water	Other	Inactive
WELL 1 (20644) ABANDONED	20352	Yes	Well	Ground water	Other	Inactive
MISSION BROOK SNDST	23465	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	27124	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29546	No	Sampling Station	-	-	Active
MISSION BROOK 650K GROUND STORAGE TANK	47031	No	Storage	-	-	Active
DISTRIBUTION GROUND STORAGE	12106	No	Storage	-	-	Inactive
TP 01-PUMP HOUSE CHLORINATION	31998	No	Treatment Plant	-	-	Active
TP 02-WELL 1B (ABANDONED)	15003	No	Treatment Plant	-	-	Inactive
TP 03-WELL 2 (ABANDONED	15004	No	Treatment Plant	-	-	Inactive
TP 04-WELL 4 (INACTIVE)	15005	No	Treatment Plant	-	-	Inactive
TP 05-DELIVERY STRUCTURE (INACTIVE)	25981	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 04-WELL 4 (INACTIVE)	15005	Gaseous Chlorination, Pre	Disinfection
TP 01-PUMP HOUSE CHLORINATION	31998	Gaseous Chlorination, Pre	Disinfection

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